Who We Are

SPN Group

Funded through the USDA’s Animal and Plant Health Inspection Service (APHIS), the Sentinel Plant Network (SPN) is a collaboration between the American Public Gardens Association (APGA) and the National Plant Diagnostic Network (NPDN).


Participants in the Sentinel Plant Network strategic planning retreat gathered in the conservatory of Longwood Gardens.
Photo courtesy of Jim Stack, Kansas State University.

 APGA logo NPDN Logo Aphis Logo

This partnership makes it possible to extend NPDN’s diagnostic and “First Detector” training expertise to the diverse collections and public outreach programs of the more than 500 APGA member gardens across the country. The two organizations work hand in hand, with NPDN taking the lead on content development and APGA working to disseminate this information through its membership by recruiting gardens to participate in the Sentinel Plant Network, conducting training workshops for professionals, and producing educational outreach materials.


Other agencies involved with the Sentinel Plant Network include: